Lewis Blood Group System and Antigens Formation

Antigen systems with antibodies that characteristically react at room temperature or colder are included in this section. These systems are listed in _________ 1

While the cold-reacting antibodies may be encountered and identified in testing, they are not likely to cause a transfusion-related __________ 2

While these antibodies are typically IgM cold-reactive antibodies, examples of IgG warm reactive antibodies may be __________ 3

Antibodies that react best at temperatures less than body temperature are not considered clinically __________ 4

In contrast to most blood group systems, the Lewis antigens are not an integral part of the red cell __________ 6

The Lewis system contains two major antigens, Lea and __________ 5

Newborns have no Lewis antigens. They type as Le _________ 7

The antigens begin to develop as early as a week after birth, and this development continues for up to six __________ 8

Comparable reactions, however, will not be seen at 37°C or in the anti-human globulin (AHG) phase of _________ 10

Antibodies that react best at colder temperatures are identified in the test tube at colder __________ 9